EUROPIUM CAS 7440-53-1
Introduction：Basic information about EUROPIUM CAS 7440-53-1, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
EUROPIUM Basic information
| Product Name: | EUROPIUM |
| Synonyms: | EUROPIUM INGOT, 3N (REO);Europium, Chips 10mm & Down;Europium, Powder 250 Micron;Europium, plasma standard solution, Specpure(R), Eu 1000μg/ml;Europium foil, 1.0mm (0.04in) thick, 99.9% (REO);Europium foil, 0.1mm (0.004in) thick, 99.9% (REO);Europium, plasma standard solution, Specpure(R), Eu 10,000μg/ml;Europium, AAS standard solution, Specpure(R), Eu 1000μg/ml |
| CAS: | 7440-53-1 |
| MF: | Eu |
| MW: | 151.96 |
| EINECS: | 231-161-7 |
| Product Categories: | metal or element;E;Matrix Selection;NitrateSpectroscopy;Reference/Calibration Standards;Single Solution;Catalysis and Inorganic Chemistry;Chemical Synthesis;Europium;EuropiumMetal and Ceramic Science;Metals;EQ - EZChemical Synthesis;EuropiumSpectroscopy;Standard Solutions;AA Standard SolutionsAlphabetic;AAS |
| Mol File: | 7440-53-1.mol |
EUROPIUM Chemical Properties
| Melting point | 822 °C (lit.) |
| Boiling point | 1527 °C (lit.) |
| density | 5.24 g/mL at 25 °C (lit.) |
| storage temp. | 15-25°C |
| solubility | reacts with H2O |
| form | ingot |
| color | Silver/gray |
| Specific Gravity | 5.24 |
| PH | 0.5 (20°C in H2O) |
| resistivity | 81 μΩ-cm, 20°C |
| Water Solubility | Reacts with water. |
| Sensitive | Air & Moisture Sensitive |
| Merck | 13,3937 |
| Exposure limits | ACGIH: TWA 2 ppm; STEL 4 ppm OSHA: TWA 2 ppm(5 mg/m3) NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| Major Application | industrial qc pharmaceutical |
| InChI | InChI=1S/Eu |
| InChIKey | OGPBJKLSAFTDLK-UHFFFAOYSA-N |
| SMILES | [Eu] |
| Shear Modulus | 7.90 GPa |
| Poissons Ratio | 0.152 |
| Hardness, Vickers | 17 |
| Bulk Modulus | 8.30 GPa |
| CAS DataBase Reference | 7440-53-1(CAS DataBase Reference) |
| EPA Substance Registry System | Europium (7440-53-1) |
Safety Information
| Hazard Codes | F,C |
| Risk Statements | 14/15-17-34 |
| Safety Statements | 43-7/8-45-36/37/39-27-26-23 |
| RIDADR | UN 2813 4.3/PG 2 |
| WGK Germany | 3 |
| F | 1-10 |
| TSCA | TSCA listed |
| HazardClass | 4.1 |
| PackingGroup | II |
| HS Code | 28053090 |
| Storage Class | 8B - Non-combustible corrosive hazardous materials |
| Hazard Classifications | Eye Irrit. 2 Met. Corr. 1 Skin Irrit. 2 |
| Uses | Europium, named after the continent of Europe, is mainly used for its phosphorescence. Excitation of the Europium atom by absorption of ultra violet radiation can result in specific energy level transitions within the atom creating an emission of visible radiation. It is a dopant in some types of glass in lasers and other optoelectronic devices. Europium Oxide (Eu2O3) is widely used as a red phosphor in television sets and fluorescent lamps, and as an activator for Yttrium-based phosphors. In energy efficient fluorescent lighting, Europium provides not only the necessary red, but also the blue. Several commercial blue phosphors are based on Europium for color TV, computer screens and fluorescent lamps. Its luminescence is also valuable in medical, surgical and biochemical applications. Europium is used for the capture of thermal neutrons for nuclear control rods in atomic power stations. Thermal neutron absorption of the natural mixture of europium isotopes is 4,600 barns. While its salts are used in coatings for cathode ray tubes in color televisions, organoderivatives are used in NMR spectroscopy. |
| Chemical Properties | grey ingots |
| Physical properties | Europium is one of the most rare of the rare-earths. Its abundance on Earth is only 1.1ppm. It is a soft, shiny, steel-gray metal that is quite ductile and malleable, which means it canbe worked and formed into many shapes. It looks like and feels like the element lead (Pb), butis somewhat heavier. It is the most chemically active of all the rare-earths. Europium’s melting point is 822°C, its boiling point is 1,529°C, and its density is 5.243g/cm3. |
| Isotopes | There are a total of 45 isotopes of europium. Two are considered stable andaccount for 100% of the europium found on Earth: Eu-151 (47.81%) and Eu-153(52.19%). All the other 53 isotopes are radioactive and artificially produced, primarily through electron capture. |
| Origin of Name | Named for the continent of Europe. |
| Occurrence | Europium is the 13th most abundant of all the rare-earths and the 55th most abundantelement on Earth. More europium exists on Earth than all the gold and silver deposits. Likemany other rare-earths, europium is found in deposits of monazite, bastnasite, cerite, andallanite ores located in the river sands of India and Brazil and in the beach sand of Florida.It has proven difficult to separate europium from other rare-earths. Today, the ion-exchange process is used to extract europium from the other rare-earths found in monazite sand(ore). |
| Characteristics | Pure europium will slowly oxidize in air at room temperature and will produce hydrogenwhen placed in water. It will ignite spontaneously if the air temperature is over 150°C. Insome ways europium resembles the elements calcium, strontium, and barium found in group2 of the periodic table. |
| History | Europium was discovered by French chemist Eugène-Anatole Demarçay, who suspected an unknown element was present in samples of the rare earth element samarium. Using spectroscopic analysis, he was able to detect a previously unknown element in 1896. In 1901, Eugène-Anatole Demarçay carried out a painstaking sequence of crystallisations of samarium magnesium nitrate, and separated yet another new element: europium. |
| Uses | Neutron absorber in nuclear control, color-TV phosphors to activate yttrium, phosphors in postagestamp glues to permit electronic recognition of firstclass mail. |
| Uses | There are only a few commercial uses for europium. Europium oxide, (Eu2O3), a compoundof europium, is added to infra-sensitive phosphors to enhance the red colors on TVand computer-monitor picture tubes. It is also added to fluorescent light tubes to increasetheir efficiency, as well as to some materials to make lasers. Since it is a good neutron absorber,it is part of nuclear reactor control rods. Europium is an additive to the glue used on postagestamps, thus making it possible for the electronic sorting machines in U.S. postal offices to“read” the stamps. |
| Definition | Atomic number 63, one of the lanthanide or rare-earth elements of the cerium subgroup, aw 151.96, valences of 2, 3; two stable isotopes. |
| Definition | A silvery elementof the lanthanoid series of metals. Itoccurs in association with other lanthanoids.Its main use is in a mixture of europiumand yttrium oxides widelyemployed as the red phosphor in televisionscreens. The metal is used in some superconductingalloys.Symbol: Eu; m.p. 822°C; b.p. 1597°C;r.d. 5.23 (25°C); p.n. 63; r.a.m. 151.965. |
| Definition | europium: Symbol Eu. A soft silverymetallic element belonging to thelanthanoids; a.n. 63; r.a.m. 151.96;r.d. 5.245 (20°C); m.p. 822°C; b.p.1597°C. It occurs in small quantitiesin bastanite and monazite. Two stableisotopes occur naturally: europium–151 and europium–153, bothof which are neutron absorbers. Experimentaleuropium alloys havebeen tried for nuclear-reactor partsbut until recently the metal has notbeen available in sufficient quantities.It is widely used in the form ofthe oxide in phosphors for televisionscreens. It was discovered by SirWilliam Crookes in 1889. |
| Manufacturing Process | Europium is now prepared by mixing Eu2O3 with a 10% excess of lanthanum metal and heating the mixture in a tantalum crucible under high vacuum. The element is collected as a silvery-white metallic deposit on the walls of the crucible. |
| Hazard | Europium is very reactive and, in powder form, may burst into flames spontaneously atroom temperature. Most of the salts of europium are toxic when inhaled or ingested. |
| Hazard | Highly reactive, may ignite spontaneously in powder form. |
| Industrial uses | As with other rare-earth metals, except for lanthanum, europium ignites in air at about 150 to 180°C. Europium is about as hard as lead and is quite ductile. It is the most reactive of the rare-earth metals, quickly oxidizing in air. It resembles calcium in its reaction with water. Bastnasite and monazite are the principal ores containing europium. Europium has been identified spectroscopically in the sun and certain stars. Europium isotopes are good neutron absorbers and are being studied for use in nuclear control applications. Europium oxide is now widely used as a phosphor activator and europium-activated yttrium vanadate is in commercial use as the red phosphor in color TV tubes. Europiumdoped plastic has been used as a laser material. With the development of ion-exchange techniques and special processes, the cost of the metal has been greatly reduced in recent years. Natural europium contains two stable isotopes. Thirty-five other radioactive isotopes and isomers are known. Europium is one of the rarest and most costly of the rare-earth metals. It is priced at about $60/g (99.9% pure). |
EUROPIUM Preparation Products And Raw materials
| Raw materials | Europium Oxide |
